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| Patents for D. R. Williams | |||||
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| Number | Date | Patentee | Title | Type | |
| 130,680 | Aug. 20, 1872 | D.R. Williams, Sr. | Improvement in scroll-sawing machines | scrollsaws | |
| 130,681 | Aug. 20, 1872 | D.R. Williams, Sr. | Sawing, turning, and boring machine | drilling and boring | |